为满足对空间目标的多重连续覆盖需求，提出一种基于大角度探测范围的偶数重连续覆盖星座设计方法。首先，由大角度探测范围确定圆环形探测区域，并依此给出覆盖带设计方法。然后，基于覆盖带拼接的方式提出了空间目标偶数重连续覆盖星座设计方法。所提出的星座设计方法具有两大优势：一是该方法对基于覆盖带拼接的星座设计方法引入了有约束条件的参数优化方法，能够用尽可能少的卫星快速设计出偶数重连续覆盖星座；二是传感器探测区域选为圆环形，可拓展所提星座设计方法的适用范围。当传感器指向天时，所设计星座可实现高、中、低轨空间目标偶数重连续覆盖。当传感器指向地时，所提星座设计方法适用于任意纬度地面目标偶数重连续覆盖问题。仿真结果表明，所提星座设计方法简单有效，可快速用较少的卫星实现空间或地面目标偶数重连续覆盖。

To meet the requirements of multi-fold continuous-coverage of space targets， a design method of even-fold continuous-coverage constellation based on the large angle detection range is proposed. Firstly， the ring detection area is determined by the large angle detection range， and a design method of the street of coverage is proposed. Then， a method of even-fold continuous-coverage constellation design for space targets is proposed based on the method of street of coverage splicing. The proposed constellation design method has two advantages. First， it introduces a constrained parameter optimization method for the constellation design method based on street of coverage splicing， which can quickly design an even-fold continuous-coverage constellations with as few satellites as possible. Second， the sensor detection area is selected as a ring， which can expand the application range of the proposed constellation design method. When the sensor points to the sky， the designed constellation can achieve even-fold continuous-coverage of high， medium and low orbit space targets. When the sensor points to the ground， the proposed method is also suitable for even-fold continuous-coverage of ground targets at any latitude. Simulation results show that the proposed constellation design method is simple and effective， and can quickly achieve even-fold continuous-coverage of space or ground targets with fewer satellites.